﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
using SPPivotViewer.HttpHandler.Internal;
using System.Net;

namespace SPPivotViewer.HttpHandler
{
    public class SPCxmlHandler : IHttpHandler
    {
        
        public SPCxmlHandler()
        {
            
        }
        public bool IsReusable
        {
            get { return true; }
        }

        public void ProcessRequest(HttpContext context)
        {
             ServeCxml(context);
        }
        private void ServeCxml(HttpContext context)
        {
            SPListCollectionParam param = new SPListCollectionParam(context);
            Collection col=CollectionCache.Instance.Get(param.Key);
            string collectionFileName = SPHandlerHelper.GetUrlFileBody(context.Request.Url);
            if (col != null)
            {
                ServeCxml(context, col, collectionFileName, param.Key);
                return;
            }
            string strKey = context.Request.QueryString["Key"];
            if (!string.IsNullOrEmpty(strKey))
            {
                Collection colCache = CollectionCache.Instance.Get(strKey);
                if (colCache != null)
                {
                    context.Response.ContentType = "text/xml";
                    colCache.ToCxml(context.Response.Output);
                    return;
                }
            }
            Collection collection=null;
            
            if (collectionFileName == "AllWebNavigationCollection")
            {
                SPAllListCollectionFactory factory = new SPAllListCollectionFactory();

                collection = factory.MakeCollection(
                    new CollectionRequestContext(context.Request.QueryString, context.Request.Url.AbsolutePath), collectionFileName);
            
            }
            
            else if (collectionFileName == "SiteDataQueryFactory")
            {
                SPSiteDataQueryFactory factory = new SPSiteDataQueryFactory();

                collection = factory.MakeCollection(
                    new CollectionRequestContext(context.Request.QueryString, context.Request.Url.AbsolutePath), collectionFileName);

            }
            else
            {
                SPListCollectionFactory factory = new SPListCollectionFactory();

                collection = factory.MakeCollection(
                    new CollectionRequestContext(context.Request.QueryString, context.Request.Url.AbsolutePath), collectionFileName, param);
            
            }
            if (null == collection)
            {
                context.Response.StatusCode = (int)HttpStatusCode.NotFound;
                context.Response.StatusDescription = "Collection is empty.";
                return;
            }

            ServeCxml(context, collection, collectionFileName, param.Key);
        }

        private void ServeCxml(HttpContext context, Collection collection, string collectionFileName,string key)
        {
            collection.SetDynamicDzc(collectionFileName,key);
            CollectionCache.Instance.Add(key, collection);

            context.Response.ContentType = "text/xml";
            context.Response.Write("<key>"+ key +"</key>");
        }
    }
}
